# Copyright 2019, The TensorFlow Federated Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""TensorFlow Federated keys for interacting with TensorFlow collections."""


class GraphKeys(object):
  """Standard names to use for graph collections.

  Similar to `tf.GraphKeys`, with keys specific to TensorFlow Federated.

  -  `TFF_MODEL_VARIABLES`: the collection of varibles in a model that
     TensorFlow Federated knows about. Similar to
     `tf.GraphKeys.MODEL_VARIABLES`.
  """
  VARS_FOR_TFF_TO_INITIALIZE = 'vars_for_tff'
